Holographic image film, and holographic image recording method and reconstruction method

Abstract

A holographic image film, and a holographic image recording method and reconstruction method are provided. The holographic image recording method includes a preparation step, an irradiation step and a recording step. The preparation step includes stacking a holographic negative film on a transparent substrate. The irradiation step includes emitting object light and reference light. The reference light is emitted into the transparent substrate and undergoes multiple times of total reflections in a thickness of the transparent substrate to form total internal reflected light. The recording step includes generating a holographic image interference line by a mutual interference between the total internal reflected light and the object light, and recording the holographic image interference line on the holographic negative film in a photosensitive manner.

What is claimed is: 
     
       1. A holographic irrrage recording method, comprising:
 a preparation step:
 stacking a holographic negative film on a transparent substrate, wherein
 the transparent substrate comprises a first surface, a second surface and at least one light entering area, 
 the first surface and the second surface are spaced from each other by a thickness of the transparent substrate, and 
 the holographic negative film is stacked on the, first surface or the second surface; 
 
 
 an irradiation step:
 emitting object light and at least one reference light, wherein
 the object light irradiates the first surface of the transparent substrate, and 
 the at least one reference light irradiates the at least one light entering area to enter the transparent substrate, the thickness of the transparent substrate being equal to twice of a wavelength of the reference light, such that the reference light undergoes multiple times of total reflections in the thickness to form total internal reflected light; and 
 
 
 a recording step:
 generating a holographic image interference line fry a mutual interference bret ween the total internal reflected light and the object light, and 
 recording the holographic image interference line on the holographic negative: film in a photosensitive manner. 
 
 
     
     
       2. The holographic image recording method according to  claim 1 , wherein the transparent substrate in the preparation step also comprises a side surface; the side surface is connected with the outer circumferences of the first surface and the second surface; and the at least one light entering area is arranged on the side surface, the first surface or the second surface. 
     
     
       3. A holographic image film, comprising a holographic layer, wherein the holographic layer records the holographic image interference line on the holographic negative film manufactured in the holographic image recording method according to  claim 2 . 
     
     
       4. The holographic image recording method according to  claim 1 , wherein the object light and the at least one reference light in the irradiation step are coherent light beams. 
     
     
       5. The holographic image recording method according to  claim 4 , wherein the object light and the at least one reference light in the irradiation step are respectively generated by light emitted by one light-emitting unit and irradiating a beam splitter. 
     
     
       6. A holographic image film, comprising a holographic layer, wherein the holographic layer records the holographic image interference line on the holographic negative film manufactured in the holographic image recording method according to  claim 5 . 
     
     
       7. A holographic image film, comprising a holographic layer, wherein the holographic layer records the holographic image interference line on the holographic negative film manufactured in the holographic image recording method according to  claim 4 . 
     
     
       8. A holographic image film, comprising a holographic layer, wherein the holographic layer records the holographic image interference line on the holographic negative film manufactured in the holographic image recording method according to  claim 1 . 
     
     
       9. A holographic image reconstruction method, comprising:
 a preprocessing step:
 preparing a holographic image film, wherein
 the holographic image film comprises a light transmission layer and a holographic layer, the light transmission layer comprises a first, surface, a second surface and an incident area, 
 the first surface and the second surface are spaced from each other by a height of the light transmission layer, and 
 the holographic layer is stacked on the first surface and records a holographic image interference line; 
 
 
 a reconstruction step:
 emitting reconstruction light into the light transmission layer through the incident area, the height of the light transmission layer being equal to twice of a wavelength of the reconstruction light, such that the reconstruction light performs multiple times of total reflections in the height to form total internal reflected light; and 
 
 an imaging step:
 irradiating, by the total internal reflected light, the holographic image interference line to form a holographic image. 
 
 
     
     
       10. The holographic image reconstruction method according to  claim 9 , wherein the light transmission layer in the preprocessing step also comprises a side edge surface; the side edge surface is connected with the outer circumferences of the first surface and the second surface; and the incident area is arranged on the side edge surface, the first surface or the second surface. 
     
     
       11. The holographic image reconstruction method according to  claim 9 , wherein the reconstruction light in the reconstruction step is emitted by a light-emitting unit, and the light-emitting unit is adjacent to the incident area.